The hottest months in Iguazu Falls are October through April. During the rest of the year - the climate slightly changes based on the hot breezes from the Amazon and cold winds from Patagonia. Winter months are a bit cooler, especially at night.

The best time to visit Iguazu Falls is from January to March - the rainy season, this is when water flow of the waterfall is significantly increased. During the rest of the year the flow is more reduced and there are few other variations. The waterfall still looks unbelievable any time of year.

In reality, the climate in Iguazu Falls and the surrounding rainforest varies very little. There almost always some chance of rain in the region, but the rain takes very little away from the experience of the waterfall.

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